diff options
Diffstat (limited to 'drivers/platform/x86/intel_baytrail.h')
| -rw-r--r-- | drivers/platform/x86/intel_baytrail.h | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/drivers/platform/x86/intel_baytrail.h b/drivers/platform/x86/intel_baytrail.h new file mode 100644 index 000000000000..8bcc311262e9 --- /dev/null +++ b/drivers/platform/x86/intel_baytrail.h @@ -0,0 +1,90 @@ +/* + * intel_baytrail.h: MailBox access support for Intel BayTrail platforms + */ + +#ifndef INTEL_BAYTRAIL_MBI_SYMS_H +#define INTEL_BAYTRAIL_MBI_SYMS_H + +#define BT_MBI_MCR_OFFSET 0xD0 +#define BT_MBI_MDR_OFFSET 0xD4 +#define BT_MBI_MCRX_OFFSET 0xD8 + +#define BT_MBI_RD_MASK 0xFEFFFFFF +#define BT_MBI_WR_MASK 0X01000000 + +#define BT_MBI_MASK_HI 0xFFFFFF00 +#define BT_MBI_MASK_LO 0x000000FF +#define BT_MBI_ENABLE 0xF0 + +/* BT-SB unit access methods */ +#define BT_MBI_UNIT_AUNIT 0x00 +#define BT_MBI_UNIT_SMC 0x01 +#define BT_MBI_UNIT_CPU 0x02 +#define BT_MBI_UNIT_BUNIT 0x03 +#define BT_MBI_UNIT_PMC 0x04 +#define BT_MBI_UNIT_GFX 0x06 +#define BT_MBI_UNIT_SMI 0x0C +#define BT_MBI_UNIT_USB 0x43 +#define BT_MBI_UNIT_SATA 0xA3 +#define BT_MBI_UNIT_PCIE 0xA6 + +/* Read/write opcodes */ +#define BT_MBI_AUNIT_READ 0x10 +#define BT_MBI_AUNIT_WRITE 0x11 +#define BT_MBI_SMC_READ 0x10 +#define BT_MBI_SMC_WRITE 0x11 +#define BT_MBI_CPU_READ 0x10 +#define BT_MBI_CPU_WRITE 0x11 +#define BT_MBI_BUNIT_READ 0x10 +#define BT_MBI_BUNIT_WRITE 0x11 +#define BT_MBI_PMC_READ 0x06 +#define BT_MBI_PMC_WRITE 0x07 +#define BT_MBI_GFX_READ 0x00 +#define BT_MBI_GFX_WRITE 0x01 +#define BT_MBI_SMIO_READ 0x06 +#define BT_MBI_SMIO_WRITE 0x07 +#define BT_MBI_USB_READ 0x06 +#define BT_MBI_USB_WRITE 0x07 +#define BT_MBI_SATA_READ 0x00 +#define BT_MBI_SATA_WRITE 0x01 +#define BT_MBI_PCIE_READ 0x00 +#define BT_MBI_PCIE_WRITE 0x01 + +/** + * bt_mbi_read() - MailBox Interface read command + * @port: port indicating subunit being accessed + * @opcode: port specific read or write opcode + * @offset: register address offset + * @mdr: register data to be read + * + * Locking is handled by spinlock - cannot sleep. + * Return: Nonzero on error + */ +int bt_mbi_read(u8 port, u8 opcode, u32 offset, u32 *mdr); + +/** + * bt_mbi_write() - MailBox unmasked write command + * @port: port indicating subunit being accessed + * @opcode: port specific read or write opcode + * @offset: register address offset + * @mdr: register data to be written + * + * Locking is handled by spinlock - cannot sleep. + * Return: Nonzero on error + */ +int bt_mbi_write(u8 port, u8 opcode, u32 offset, u32 mdr); + +/** + * bt_mbi_modify() - MailBox masked write command + * @port: port indicating subunit being accessed + * @opcode: port specific read or write opcode + * @offset: register address offset + * @mdr: register data being modified + * @mask: mask indicating bits in mdr to be modified + * + * Locking is handled by spinlock - cannot sleep. + * Return: Nonzero on error + */ +int bt_mbi_modify(u8 port, u8 opcode, u32 offset, u32 mdr, u32 mask); + +#endif /* INTEL_BAYTRAIL_MBI_SYMS_H */ |